298 H. J. VAN CLEAVE 



Fig. 32 Eorhynchus emydis (Leidy); proboscis of fully mature female. X 97. 



Fig. 33 Hooks of Eo. emydis. X 310. 



Fig. 34 Embryos of Eo. emydis. X 310. 



Fig. 35 Proboscis of Eo. cylindratus (Van C.) X 97. 



Fig. .36 Hooks of Eo. cylindratus. X 310. 



Fig. 37 Embryos of Eo. cylindratus. X 310. 



Fig. 38 Eo. tenellus; reconstruction from sagittal sections of anterior end 

 of body. X 97. 



Fig. 39 Eo. tenellus; reconstruction of posterior end of female, showing geni- 

 tal tract. X 97. 



Fig. 40 Eo. emydis (juv.) ; genital tract of female; toto mount. X 310. 



Fig. 41 Eo. emydis; Cement gland of mature male. X 97. 



Fig. 42 Eo. emydis; Cement gland of immature male. X 97. 



Fig. 43 Eo. emydis (juv.) ; lemnisci in toto mount. X 97. 



Fig. 44 Eo. emydis (juv.); proboscis receptacle and adjacent organs; toto 

 mount stained in hematoxylin. X 97. 



Fig. 45 Eo. agilis; longitudinal section, showing especially the terminal pro- 

 boscis organ. Copied from Hamann, 1895, plate 3, figure 28. 



Fig. 46 Eo. rutili; anterior end of body. Copied from Saefftigen, 1884, plate 

 5, figure 6. 



